Urgency to update Germany’s coal mine methane emission factor

Ember reports that Germany's official coal mine methane (CMM) emissions are likely underestimated by 28 to 220 times. The current reporting relies on a single emission factor from a 1989 study that does not account for depth, geological variability, or surrounding strata. Independent estimates suggest annual emissions could be as high as 307,000 tonnes, compared to the 1.39 thousand tonnes officially reported for 2022. Ember recommends that Germany implement deposit-specific emission factors, direct measurements for active and closed mines, and pre-mine drainage to mitigate emissions.

• Germany's reported active coal mine methane (CMM) emissions are drastically lower than those of other EU members despite its high production volume; in 2022, Germany produced 44% of the EU's total lignite but reported active CMM emissions of only 1.39 thousand tonnes, which is 1% of the total reported by the EU.
• Independent assessments indicate that Germany's actual CMM emissions from active mining are between 28 and 220 times higher than official government reports, with the highest estimate from Global Energy Monitor (GEM) suggesting an additional 300,000 tonnes annually.
• Germany's current emission factor is based on a single 1989 study by Rheinbraun AG and is considered inadequate because it does not account for variations in mine depth, coal geology, or methane emissions from surrounding strata.
• Comparative analysis shows that Germany's evaluation of methane content in its coal is 40 to 100 times lower than in-situ measurements of Polish lignite, despite Germany considering its lignite comparable to Poland's.
• The upcoming EU Methane Regulation will mandate a more rigorous approach, requiring 'deposit-specific coal mine methane emission factor' established quarterly and accounting for emissions from surrounding strata.
• Ember recommends three primary actions for Germany: requiring direct measurement and modeling for active and closed mines, avoiding coal mine expansions while phasing out the gassiest mines first, and implementing mitigation techniques such as pre-mine drainage.

APA

Assan, D. S. (2024). Urgency to update Germany’s coal mine methane emission factor. Ember. https://ember-energy.org/app/uploads/2024/04/Urgency-to-update-methane-emission-factors-from-Germanys-coal-mining-sector-2.pdf

Chicago

Assan, Dr. Sabina. Urgency to update Germany’s coal mine methane emission factor. Ember, 2024. https://ember-energy.org/app/uploads/2024/04/Urgency-to-update-methane-emission-factors-from-Germanys-coal-mining-sector-2.pdf.

Wikipedia

{{cite report |last1=Assan |first1=Dr. Sabina |title=Urgency to update Germany’s coal mine methane emission factor |publisher=Ember |date=10 April 2024 |url=https://ember-energy.org/app/uploads/2024/04/Urgency-to-update-methane-emission-factors-from-Germanys-coal-mining-sector-2.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{assan2024urgency, author = {Assan, Dr. Sabina}, title = {{Urgency to update Germany’s coal mine methane emission factor}}, institution = {Ember}, year = {2024}, month = apr, url = {https://ember-energy.org/app/uploads/2024/04/Urgency-to-update-methane-emission-factors-from-Germanys-coal-mining-sector-2.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }